betts



(No Model.) 3 Sheets-Sheet 1.

L. F. BETTS.

MANUFACTURE OF TUBULAR PARTS OF LANTERN FRAMES. NO. 340,274. I PatentedApfJZO, 1886.

E N. PETERS, Pmwmho n mn Washinflom 0. c.

3 Sheets-Sheet 2.

(No Model.)

L. ,F. BETTS.

MANUFACTURE OF TUBULAR PARTS OF LANTERN FRAMES.

No. 340,274. Patented Apr. 20, 1886.

(No Model.) 3 Sheets-Sheet 3.

L. F. BETTSI.

MANUFACTURE OF TUBULAR PARTS OFILANTERN FRAMES. 4 No. 340,274. I Patented Apr. 20, 1886.

N. PEIERS. Phoio-Ulhognpher. Washingium VD. C,

NITED STATES- P T NT Erica.

LEwis F. nErrs, OF NEW YORK, N. Y., ASSIGNOR 'IO FREDERICK DIETZ,

or SAME PLACE.

MANUFACTURE QF TUBULAR PARTS OF LANTERN-FRAMES.

EPECIFICATION forming part of Letters Patent No. 340,274, dated April 20, 18; 6.

Application filed Oc'ober .l, 1885. Serial No. 180,89. (No model.)

To allwhom it may concern.-

Be it known that I, LEWIs F. BnTIs, of New York city, county of New York, and State of New York, have invented certain new and useful Improvements in Tubular Lanterns, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention has special relation to that class of lanterns wherein air for the support of combustion is conducted down to the under side of the burner-cone from the region ofthe top of the lantern through tubes provided for the purpose, which class is now ordinarily known as tubular lanterns, and it will be understood from the following explanations that my improvements are applicable in con nection with any variety of the above-mewtioned class of tubular lanterns, as well as to anygvariety of tubular lamps or otherilluminating or analogous structures employing the side tubes for the purposes and after the manner of the tubular lanterns.

. The principal objects of my invention are to simplify and cheapen the cost of construc tion of devices of the class named, employing fewer pieces or parts than in former construe tions; to facilitate assembling or mounting the parts; to render them all firm and durable;, to dispense with numerous joints heretofore required to be soldered and difficult and unhandy to fit; to economize in the consumption of material or stock, and to otherwise improve the general construction, as will hereinafter manufacture, all of which will be herein first fully described, and then pointed out in the claims. p

In the accompanying drawings, forming part of this specification, I have shown the parts or pieces in detail and a tubular lantern involving the same in its construction, these representations being sufficient to indicate the manner of making and employing my improvements.

Figure 1 is a plan View of a piece of sheet n'ietal,showing the outlines of the blanks to be cut therefrom to form the side tubes and lower elbows, and indicating the method of cutting the blanks so as to economize the stock. Fig. 2 isa plan and section showing one half of a side tube and lower elbow as it appears after being stamped, and Fig. 3 is a plan and sec tion of the same after having been trimmed and burred up. Fig. I is a plan and section showing the remaining half of the tube and the lower elbow formed therewith as it ap pears after being stamped up and trimmedto match the part shown in Fig. 3. Fig. 5 is a plan and. section showing the two parts or halves set together, and Fig. 6 similar views showing them looked after the manner of my invention. Fig. 7 is a plan view of a piece of sheet metal, showing the outlines of the blanks to be cut therefrom to form the top elbows and the central tube or pipe, and indicating the method of cutting these blanks so as to economize the stock. Fig. 8 is a plan ofone of the blanks shown in Fig. 7 as it appears after having been subjected to the coaxing-die, and Fig. 9 is aplan showing the same stamped up. Fig. 10 represents a plan and sections of one of the blanks similar to that of Fig. 9, cut and trimmed ready to be burr-ed, and Fig. 11 represents, in a similar manner, the same barred up and pierced and indented for the globe-lifting wire, and made ready to receive the other half or part of the form shown in Fig. 9. Fig. 12 represents a plan and sections of the two halves united with each other to form the top piece, and united with the tops of the side tubes and ready to be mounted foruse, after the manner of my invention. Fig. 13 is a central vertical section through the top piece shown in Fig. 12, and upon a plane at right angles to that of Fig. 12. Fig. 9c

and a short portion, extending nearly at right angles one to the other, the longer portion being intended to form the main portion of the side tube, and the shorter portion to form the elbow and the extension for connecting with the air-chamber upon the top of the oilfonnt. It will be observed that these blanks are so proportioned and shaped that they may be cut from the sheet metal consecutively, after the manner and under the arrangement indicated in Fig. 1, with great economy, wasting very little of the material of the sheet or stock, the short portion on one blank extending beyond the end of the long portion on the other. and being in length a trifle more than the width of the blank, as plainly shown. One blank so cut is stamped with suitable dies into the form shown in Fig. 2, its mate being similarly stamped, but of course so that the elbow or bend will turn in the opposite direction from that of Fig. 2; but bot-h these pieces are formed of the blanks shown in Fig. 1, which, as will be observed, can be cut with onetool or set of blanking-dies, being similar in size and shape. The long side-pipe portion is represented at a, the elbow or bend at b, the connecting extension at 0, and the flanges, which extend the length of the piece, at d.

At 0 is a rib or head employed in connecting the side pipes with the top piece. After being stamped up in the form indicated in Fig. 2 the piece is trimmed. and the remaining portions of the flanges d bent up or burred up, as in Fig. 3, and the piece thus made ready for the reception of its matching part. Of this matching part the flanges are trimmed down and cutaway, as indicated in Fig. 4, so as to set in between the upturned portions of the flanges on Fig. 3, as shown in Fig. 5. The two parts, being placed together as in Fig. 5,are subjected to the operation ofa closing-die, by which the burring is turned down, and thus the two parts securel y locked together, as indicated in Fig. 6. Atff the flanges are cut away, so as to accommodate the burring upon the top piece to beunited with the side pipes, and at f f they are cut away, so that the connecting section or extension may make a fair joint with the top of the oil fonnt, and with the wall of the air-channel, for unless cutaway the flanges would interfere with adjacent parts at the locations named. By making the side pipes, the lower elbows, and connecting sections or extensions in this manner, aside from the manifest saving of labor, time, and material over the former methods, the parts are made to match accurately, and the bent pipe or tube finished, as in Fig. 6, is solid and substantial, requires no soldering along the seams, and requires no change or alteration to fit it properly to place in the lamp or lantern structure. The flanges at the edges being doubled over renders the pipe stiff and little liable to damage, and the connected parts, being then practically a single piece, are much easier and more convenient to handle than in former construction,wherein the pi pe-elbow and connecting section or extension were made in three separate parts.

For making the top elbows and the central pipeI employ blanks of the form shown in Fig. 7 ,wherein 0 represents a sheet of tin or other sheet metal,and D D the blanks to be out therefrom. Of these blanks, g g are the portions of which the top elbows are to be formed, h the central pipe portion,and z 1' car pieces or projections which are employed for forming the bailears. These blanks are to be cut consecutively from the sheet under the arrangement indicated in Fig. 7, the ear-pieces of one blank (when used) to be formed of a portion of the metal left between the locations of the elbowpicccs ofthe preceding blank,thus economizing stock. The blanks for both halves of the top piece are cut with the same tools, these pieces being similar in size and shape, same as the blanks before described. The ear-pieces might be omitted under some constructions. The top piece having two elbows and acentral pipe, it becomes necessary to subject the blank first to a coaxing-die, by which it is partially bent or formed up, as indicated in Fig. 8, and afterward to the stamping-die, by which it is made to take the finished shape shown in Fig. 9. The two halves of the top piece are symmetrical-that is, they are of the same size and shape upon each side of the central line, so that for this piece the halves are blanked out, coaxed, and stamped with the same tools; but one of the halves is cut and trimmed, as indicated in Fig. 10, and burred up, as indicated in Fig. 11, the ear-pieces being cut off. Beads, as k k, are formed in each half, and these fit over the heads a upon the ends of the side pipes. The side pipes, finished as above explained, are located in the ends of the top elbows, and the bnrri-ng of the top piece then turned down by a closing or finishing die, and the whole locked together, as shown in Fig. 12. It will be observed that all the parts so far are locked together without the use of solder, and all the matching is done by machinery, resulting in an accurate and unvarying union (as to size and relative position) of all the parts. The parts so united are ready to be connected with the top of the oil-fount E, and with the wall of the air-chad nel F, which is accomplished by use of solder at the points marked 1 I, Fig. 14-, the ends of the connecting sections or extensions being made to enter the outer wall of the air-channel F, which leads to the under side of the burnercone.

By making the top elbows in a separate piece from the side pipes I am enabled to use the two sets of blanks herein described, in cutting each of which a saving, of stock is effected, as before explained, whereas if the top elbows and the side pipes and bottom elbows were made of continuous matching parts-that is, not having a horizontal joint or union between their extremities--no such saving of stock could be effected.

G is the dome, located over the globe H.

in the grooves or channels 0 0, stamped in the central pipe, h, and is held in place therein by the pieces 2) p, pressed out in the manner indicated. The lifter is passed under the holders p p, and is then soldered to the dome, as at the points q q.

I make no claim herein to the means employed for lifting the globe, reserving the same for the subject of a separate application for patent. The bailears i i are simply turned over the bail N and secured by solder, if desired, and thus the bail is firmly connected with the lantern structure, and is easily and quickly mounted thereon. A tacking of solder might be employed, if desired, at the points of juncture between the side pipes and the top elbows, to make the union between the top piece and the side pipes absolutely secure; but no solder whatever is required to make the seams or the joints air-tight. The construction is such that the divisions between the halves or parts making up the side pipes and the top piece (composed of the top elbows and central pipe) lie in avertical plane through the axis of the lantern, and when the joints are locked or closed ribs are formed upon opposite sides of each pipe and elbow in the best positions to stiffen the Whole, and to insure strength, durability, and firmness throughout. By reason of the employment of these stiffening-ribs alighter grade of metal than would otherwise be advisable may, if desired, be used in the construction.

Being constructed and arranged in accordance with the foregoing explanations, theimproved lantern has been found to admirably answer the purposes or objects of theinvention, as previously stated.

Having now fully described my invention, what I claim as new herein, and desire to secure by Letters Patent, is-

1. The herein-described tubes formed of the two matching parts stamped, flanged, and

locked together, and combined with the top elbows formed of separate stamped and locked pieces, substantially as and for the purposes set forth.

2. The herein-described blanks for forming the side tubes,.1ower elbows, and connectingsections, said blanks being similar in form and size, and proportioned and arranged to be cut from the stock, substantially as shown and described.

3. The herein-described top piece composed of the top elbows and the central pipe, the same being formed of the two matching parts united at their edges, substantially as and for the purposes set forth.

4. The combination,with the side pipes having the beading at their upper ends, of the top elbows, also beaded and secured upon the ends of the side pipes, substantially as shown and described.

5. The combination, with the side tubes, of the top piece comprising the top elbows and central pipe, the several parts of the top piece and side tubes being united substantially as explained, so as to leave the strengtheningribs, substantially as and for the purposes set forth.

6. The herein-described blanks for forming the top piece, comprising the top elbows and central pipe, said blanks being similar in form and size, substantially as and for the purposes set forth.

7. The combination,with the top piece, made of the two similar parts, locked together as explained, of the bail-ears formed integrally with one of the halves of said top piece, substantially as and for the purposes set forth.

8. The top elbows, central pipe, side pipes made separate from the top elbows, bottom elbows, and connecting-sections,united and arranged substantially as specified, so as to leave the strengthening-ribs upon the outer and inner margins, substantially as and for the pur poses set forth.

In testimony that I claim the foregoing I have hereunto set myhand in the presence of two witnesses.

LEWIS F. BETTS.

\Vitnesses JOHN BUCKLER, WORTH Oseoon. 

